Grade 7 Integrated Science · Strand 1: Scientific Investigation · Laboratory Safety
First Aid Measures Laboratory Burns and Scalds
A short Grade 7 Integrated Science lesson for the CBE curriculum, part of Scientific Investigation: Laboratory Safety. Learn it on any phone with notes and slides, then check yourself with a quick quiz and earn XP. This lesson is free.
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1. A Grade 7 learner touches a hot tripod stand in the laboratory and gets a small red burn on the hand. What is the correct first aid action?
- A. Rub butter over the burn to seal in moisture
- B. Hold the burn under clean, cool running water for at least 10 minutes
- C. Rub ice cubes on the burn until it feels numb
- D. Burst any blisters with a sterilised pin
2. Boiling water from a beaker spills onto a learner's forearm. What type of injury is this?
- A. A scald, caused by moist heat
- B. A dry thermal burn, caused by a flame
- C. A chemical burn, caused by an alkali
- D. Frostbite, caused by extreme cold
3. Concentrated acid splashes onto a learner's laboratory coat sleeve and arm. Why should the learner NOT try to neutralise it with a strong alkali on the skin?
- A. Alkalis make the skin turn white
- B. The neutralisation reaction releases heat that worsens the burn
- C. Alkalis are always weaker than acids
- D. Neutralisation only works on dry skin
4. A learner's laboratory coat is soaked with a corrosive chemical. How should it be removed?
- A. Pull it up quickly over the head
- B. Rip it off and throw it on the floor
- C. Leave it on until the nurse arrives
- D. Unbutton it and peel it away from the face
5. What word describes washing an injured area with a continuous, copious flow of clean water, as done for chemical spills on the skin?
Type your answer in the lesson.
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